Lashon Hara (Hebrew: לשון הרע), literally means "Evil tongue", is the Halakhic term for derogatory speech about another person. The sin of lashon hara is considered to be a very serious sin in Judaism.
The term lashon hara is mentioned in Psalm 34:14:
" נְצֹר לְשׁוֹנְךָ מֵרָע; וּשְׂפָתֶיךָ, מִדַּבֵּר מִרְמָה."
"Keep thy tongue from evil, and thy lips from speaking guile."
The act of gossiping is called in Hebrew rekhilut, and is also forbidden by Jewish law and it is mentioned in the Torah, Leviticus 19:16-
" לֹא-תֵלֵךְ רָכִיל בְּעַמֶּיךָ, לֹא תַעֲמֹד עַל-דַּם רֵעֶךָ: אֲנִי, יְהוָה."
" Thou shalt not go up and down as a talebearer among thy people; neither shalt thou stand idly by the blood of thy neighbour: I am the LORD."
The Rabbis note that the universe itself was created through speech. Of the 43 sins enumerated in the Al Cheit confession recited on Yom Kippur, 11 are sins committed through speech.
The Talmud tells that the tongue is an instrument so dangerous that it must be kept hidden from view, behind two protective walls (the mouth and teeth) to prevent its misuse.
In Jewish law, all things are considered to be secret unless a person specifically says